Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis

Microwave drying of suspensions of lignocellulosic fibers has the potential to produce porous foam materials that can replace materials such as expanded polystyrene, but the design and control of this drying method are not well understood. The main objective of this study was to develop a microwave drying model capable of predicting moisture loss regardless of the shape and microwave power input. A microwave heating model was developed by coupling electromagnetic and heat transfer physics using a commercial finite element code. The modeling results predicted heating time behavior consistent with experimental results as influenced by electromagnetic fields, waveguide size and microwave power absorption. The microwave heating modeling accurately predicted average temperature increase for 100 cm3 water domain at 360 and 840 W microwave power inputs. By dividing the energy absorption by the heat of vaporization, the amount of water evaporation in a specific time increment was predicted leading to a novel method to predict drying. Using this method, the best time increments, and other parameters were determined to predict drying. This novel method predicts the time to dry cellulose foams for a range of sample shapes, parameters, material parameters. The model was in agreement with the experimental results.

[1]  M. Tajvidi,et al.  Comprehensive Insight into Foams Made of Thermomechanical Pulp Fibers and Cellulose Nanofibrils via Microwave Radiation , 2021, ACS Sustainable Chemistry & Engineering.

[2]  Zhien Zhang,et al.  Heat transfer enhancement and exergy efficiency improvement of a micro combustor with internal spiral fins for thermophotovoltaic systems , 2021, Applied Thermal Engineering.

[3]  Robert Schiffmann,et al.  Microwave and Dielectric Drying , 2020, Handbook of Industrial Drying.

[4]  D. Bousfield,et al.  Cellulose and lignocellulose nanofibril suspensions and films: A comparison. , 2020, Carbohydrate polymers.

[5]  B. Bhandari,et al.  Modelling of simultaneous heat and mass transfer considering the spatial distribution of air velocity during intermittent microwave convective drying , 2020, International Journal of Heat and Mass Transfer.

[6]  Michael D. Mason,et al.  A comparative study of methods for porosity determination of cellulose based porous materials , 2020, Cellulose.

[7]  M. Tajvidi,et al.  Laminated Wallboard Panels Made with Cellulose Nanofibrils as a Binder: Production and Properties , 2020, Materials.

[8]  L. Carlsson,et al.  Finite element modeling of face/core interface fracture in homogenized honeycomb core sandwich SCB specimens , 2020 .

[9]  D. Bousfield,et al.  Dewatering Behavior of a Wood-Cellulose Nanofibril Particulate System , 2019, Scientific Reports.

[10]  Z. Wang,et al.  A fully coupled electromagnetic, heat transfer and multiphase porous media model for microwave heating of coal , 2019, Fuel Processing Technology.

[11]  Guozhong Hu,et al.  A coupled electromagnetic irradiation, heat and mass transfer model for microwave heating and its numerical simulation on coal , 2018, Fuel Processing Technology.

[12]  D. Bousfield,et al.  Evaluation of the incorporation of lignocellulose nanofibrils as sustainable adhesive replacement in medium density fiberboards , 2017 .

[13]  Chunshan Zheng,et al.  Sensitivity analysis on the microwave heating of coal: A coupled electromagnetic and heat transfer model , 2017 .

[14]  L. Bergström,et al.  Nanocellulose-based foams and aerogels: processing, properties, and applications , 2017 .

[15]  D. Bousfield,et al.  Utilization of Cellulose Nanofibrils as a Binder for Particleboard Manufacture , 2017 .

[16]  J. Bras,et al.  Production of cellulose nanofibrils: A review of recent advances , 2016 .

[17]  A. Datta,et al.  Coupled electromagnetics, multiphase transport and large deformation model for microwave drying , 2016 .

[18]  Nathalie Gontard,et al.  Active bio-based food-packaging: Diffusion and release of active substances through and from cellulose nanofiber coating toward food-packaging design. , 2016, Carbohydrate polymers.

[19]  D. Bousfield,et al.  Production and Characterization of Laminates of Paper and Cellulose Nanofibrils. , 2016, ACS applied materials & interfaces.

[20]  Laurent Orgéas,et al.  Cellulose nanofibril foams: Links between ice-templating conditions, microstructures and mechanical properties , 2016 .

[21]  Chul B. Park,et al.  Development of PLA/cellulosic fiber composite foams using injection molding: Crystallization and foaming behaviors , 2016 .

[22]  R. Younsi,et al.  Computational analysis of heat and mass transfer during microwave drying of timber , 2016 .

[23]  Markus Antonietti,et al.  Thermally insulating and fire-retardant lightweight anisotropic foams based on nanocellulose and graphene oxide. , 2015, Nature nanotechnology.

[24]  S. Kingman,et al.  Microwave processing of cement and concrete materials - towards an industrial reality? , 2015 .

[25]  D. Bousfield,et al.  Cellulose nanofibril (CNF) reinforced starch insulating foams , 2014, Cellulose.

[26]  Omid Salmani Nuri,et al.  Influence of microwave irradiation on ilmenite flotation behavior in the presence of different gangue minerals , 2014 .

[27]  Jeyamkondan Subbiah,et al.  A microwave heat transfer model for a rotating multi-component meal in a domestic oven: Development and validation , 2014 .

[28]  Lars Wågberg,et al.  Nanocellulose aerogels functionalized by rapid layer-by-layer assembly for high charge storage and beyond. , 2013, Angewandte Chemie.

[29]  Mika Fukuoka,et al.  A finite element model for simulating temperature distributions in rotating food during microwave heating , 2013 .

[30]  A. Ragauskas,et al.  Cellulose nanowhisker foams by freeze casting , 2012 .

[31]  I. Furó,et al.  Towards tailored hierarchical structures in cellulose nanocomposite biofoams prepared by freezing/freeze-drying , 2010 .

[32]  Phadungsak Rattanadecho,et al.  Non-commercial Research and Educational Use including without Limitation Use in Instruction at Your Institution, Sending It to Specific Colleagues That You Know, and Providing a Copy to Your Institution's Administrator. All Other Uses, Reproduction and Distribution, including without Limitation Comm , 2022 .

[33]  Patrick Salagnac,et al.  Numerical modeling of heat and mass transfer in porous medium during combined hot air, infrared and microwaves drying , 2004 .

[34]  Hao Feng,et al.  Heat and mass transport in microwave drying of porous materials in a spouted bed , 2001 .